Verilink NCC 2130 (880-503285-001) Product Manual - Manual (Page 49)

Diagnostics
Verilink NCC 2130 User Manual 5-7
Front Panel LEDs
This section describes the function of the NCC 2130 LED indicators.
EQPT LED The EQPT (equipment) LED is a tri-color indicator with six states, as
follows:
Table 5-3 Equipment LED States
STAT LED The STAT (status) LED is a three-color indicator with six possible
states, as follows:
Table 5-4 Stat LED States
State Meaning
Solid Green Typical, no DTE related alarms.
Solid Yellow The NCC 2130 is in a loop which faces the Equipment port
(Repeater Loopback or Equipment Loopback).
Flashing
Red Twice,
To Green
LOS detection is enabled and the DTE is not asserting the lead
that the NCC 2130 is optioned to require; DTR (Data Terminal
Ready) or RTS (Request To Send).
Flashing
Red to Off
Hardware error, can indicate incorrect rear module is detected.
Flashing
Red to
Yellow
The NCC is looped toward the equipment (RLB, ELB) and errors
are detected.
Not Lit The NCC has no power or, if other LEDS are lit, the NCC is
defective.
State Meaning
Solid Green Access Manager 2000 has been used to download Test System
2000 software to the module.
Solid
Yellow
A test is in progress and no errors are detected (a test signal is
currently being transmitted to the circuit by the CSU and the
received pattern matches the transmitted pattern).
Solid Red Some alarm condition has occurred within the last fifteen
minutes on either the Network or Equipment interface.
Flashing
Red to Off
Power up self test has failed—verify that the rear module is of a
correct type (CDM 2035, CDM 2135, CDM 2049, CDM 2149).
Flashing
Red to
Yellow
Errors have been received during a test (a test signal is being
transmitted and the pattern received does not match the pattern
which was sent).
Not Lit No alarms have occurred within the last fifteen minutes, this is
the normal state for the STAT LED.